Home / 20,239.40-27,919.14-11,854.28

Finding the Fourth Proportional to 20,239.40, 27,919.14 and 11,854.28

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Solution

The fourth proportional to 20,239.40, 27,919.14 and 11,854.28 is: 16,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.40 : 27,919.14 = 11,854.28 : x
  2. Step 2: Convert to fraction form
    20,239.40/27,919.14 = 11,854.28/x
  3. Step 3: Cross multiply
    20,239.40x = 27,919.14 × 11,854.28
  4. Step 4: Simplify right side
    20,239.40x = 330,961,302.92
  5. Step 5: Solve for x
    x = 330,961,302.92/20,239.40
  6. Step 6: Final answer
    x = 16,352.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.